Construction of a nonlinear permeability model of pervious concrete and drainage simulation of heavy rain in a residential area
Construction of a nonlinear permeability model of pervious concrete and drainage simulation of heavy rain in a residential area
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DOI：
10.1016/j.rinma.2019.100033
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发表时间：
2019-10
影响因子：
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通讯作者：
S. Hatanaka;Z. Kamalova;M. Harada
中科院分区：
文献类型：
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作者：
S. Hatanaka;Z. Kamalova;M. Harada
本文的目的之一是证明透水或多孔混凝土（PC）的非线性渗透行为。论文总结了研究结果，表明平均流速和水力梯度通过指数函数相关，那么达西线性定律不适用于PC。此外，通过计算机模拟评估PC的路面排水性能，显示了PC在住宅区的适用性。结果表明，垂直渗透率试验得到的透水混凝土非线性渗透率模型也适用于水平方向的水流。此外，还证实，当城市街区广泛布置PC路面时，PC对于减少和延缓流入河流的雨水径流高峰具有预期效果。
One of the aim of the paper is to demonstrate nonlinear permeability behaviour of pervious or porous concrete (PC). Paper summarises the results of the study which showed that mean flow velocity and hydraulic gradient are related through exponential function, then Darcy’s law of linearity is not applicable for PC. Further, applicability of PC in residential areas is shown by assessing PC’s pavement drainage properties through computer simulation. Results show that the non-linear permeability model of pervious concrete obtained from vertical permeability tests is applicable for horizontal direction of flow as well. In addition, it is confirmed that PC’s effectiveness can be expected in decreasing and delaying a peak runoff of rain waters into rivers when PC pavement is widely arranged in a city block.